## anonymous one year ago Find the probability associated with the standard normal random variable z: P(z>5) I think its 1 but im not sure please help me!

1. anonymous

Well, approximately 99% of any normally distributed population lies within 3 standard deviations of the mean. You're asking about the probability that some point lies outside $$\textit{five}$$ standard deviations.

2. anonymous

so is it 0?

3. anonymous

?

4. anonymous

hello?

5. anonymous

Right, the probability is so small it might as well be 0.